Highest salary at Mendham Borough in year 2018 was $244,029. Number of employees at Mendham Borough in year 2018 was 37. Average annual salary was $77,944 and median salary was $63,427. Mendham Borough average salary is 66 percent higher than USA average and median salary is 46 percent higher than USA median salary. From 2017 to 2018, the average salary of employees at this employer increased 18.1 percent, the median salary increased 15.2 percent.